In 2007, as an amateur, tied for 14th at the LPGA Final Qualifying Tournament to earn exempt status for the 2008 LPGA season; turned professional immediately following the round. In 2008, recorded a tie for 14th at the Ginn Tribute Hosted by ANNIKA.

In 2009, recorded a career-best tie for fifth at the LPGA Corning Classic; carded a career-low 64 in the opening round of the Wegmans LPGA, where she tied for 10th; tied her career-low 64 during the opening round of the P&G Beauty NW Arkansas Championship Presented by John Q. Hammons, where she tied for 14th.

In 2010, best finish was a tie for 11th at the LPGA Tour Championship; tied for 17th at the Sybase Match Play Championship; tied for 27th at the Tres Marias Championship; tied for 32nd at the Sime Darby LPGA Malaysia; tied for 36th at the Navistar LPGA Classic Presented by Monaco RV; tied for 46th at the CVS/pharmacy LPGA Challenge and tied for 71st at the Evian Masters Presented by Société Générale.

2011 saw Gal become a Rolex First-Time Winner at the Kia Classic where she defeated Rolex Rankings No. 2 Jiyai Shin with a 72nd hole birdie. Additional top-10 finishes included: tied for second at the CME Group Titleholders; tied for fifth at the Walmart NW Arkansas Championship; tied for ninth at the Avnet LPGA Classic; tied for 10th at the RR Donnelley LPGA Founders Cup. Competed on her first European Solheim Cup Team with a 0-2-1 record.

2012 saw Gal finish a season's best 3rd at the US Women’s Open whilst also recording two top 10 finishes. She made 23 cuts out of 26 events played placing her 25th of the money list and ranked 33rd in the world.